34 citations · 70 across the 7 of their papers we have counts for
7 papers
Phonon-like excitations in the two-state Bose-Hubbard model
I. V. Stasyuk, O. V. Velychko, O. Vorobyov
The spectrum of phonon-like collective excitations in the system of Bose-atoms in optical lattice (more generally, in the system of quantum particles described by the Bose-Hubbard…
Energy spectrum and phase diagrams of two-sublattice hard-core boson model
I. V. Stasyuk, O. Vorobyov
The energy spectrum, spectral density and phase diagrams have been obtained for two-sublattice hard-core boson model in frames of random phase approximation approach. Reconstructio…
Spectral densities and diagrams of states of one-dimensional ionic Pauli conductor
I. V. Stasyuk, O. Vorobyov, R. Ya. Stetsiv
We focus on the features of spectra and diagrams of states obtained via exact diagonalization technique for finite ionic conductor chain in periodic boundary conditions. One dimens…
Electronic Raman scattering in correlated materials: exact treatment of nonresonant, mixed, and resonant scattering with dynamical mean field theory
A. M. Shvaika, O. Vorobyov, J. K. Freericks +1
We solve for the electronic Raman scattering response functions on an infinite-dimensional hypercubic lattice employing dynamical mean field theory. This contribution extends previ…
Resonant Enhancement of Electronic Raman Scattering
A. M. Shvaika, O. Vorobyov, J. K. Freericks +1
We present an exact solution for electronic Raman scattering in a single-band, strongly correlated material, including nonresonant, resonant and mixed contributions. Results are de…
Resonant electronic Raman scattering near a quantum critical point
A. M. Shvaika, O. Vorobyov, J. K. Freericks +1
We calculate the resonant electronic Raman scattering for the Falicov-Kimball model near the Mott transition on a hypercubic lattice. The solution is exact, and employs dynamical m…